k3s-cluster/cluster/core/networking/metallb/metallb-static-ips.yaml

apiVersion: metallb.io/v1beta1
kind: IPAddressPool
metadata:
  name: static-ip-range
  namespace: metallb-system
spec:
  addresses:
    - 192.168.87.10-192.168.87.28
  autoAssign: true
---
apiVersion: metallb.io/v1beta1
kind: L2Advertisement
metadata:
  name: static-l2advertisement
  namespace: metallb-system
spec:
  ipAddressPools:
    - static-ip-range